I did some home work and went through a few posts and threads to see what i could find on making 400rwhp. of course i found the

"400HP – At this point, it gets tougher to keep the power on the road, so upgraded tires and suspension should also be considered. One fellow planned his path to 400hp in advance to be $10k plus installation time. This list of power mods includes full exhaust, intake, upgraded turbos, reliability mods, upgraded fuel and ignition system, engine porting, standalone engine computer and wideband O2 sensor, clutch, intercooler and tuning."

so no need to refer me back to it.

my question is i have a stock '93 FD and i am getting the engine rebuilt this summer and i want to know while i have the engine pulled out of the car what do i need to do to the internals to make 400+rwhp? so far i've come up with;

healthy street port
BNR stage III sequential turbos
and...what else??

 

Port job, upgrade the turbo's, upgrade the fuel system (injectors, pump, FPR, etc), clutch, ECU, monitoring mods (AFR, Boost, oil pressure, temp, fuel pressure, etc) Ignition, will probably want to upgrade the engine mounts, Intercooler, Radiator, make sure all the hoses are replaced, AST (or delete), Intake, DP/MP/CB, Brakes, suspension, wheels/tires, Diff brace, tranny brace, rebuild 5th gear syncro (if needed)...

Thats where I would look to start.

I purchased most everything I mentioned over the course of this past winter in preps for BNR's. It cost me (including wheels/tires and clutch kit) right about 8k, this included the BNR Stage 3's.

 

thanks much

 

Thats exactly what Im planning to do also. Ive spent about $4000 on the motor alone so far, and still need fuel, haltech, intercooler... I had figured Id be done with the car spending $15,000, so the motor probally 10k? Sounds right to me!

 

400 on stock twins and motor has been done. Can't say how long the turbo's lasted though... That said:

If your FD is stock, I seriously recommend getting some driving lessons prior to unleashing your right foot on the pedal of a 400 HP FD. It's a ******* MACHINE. More incredible than any GTO you'll get a test drive in.

Seriously. Be careful. I don't know if many people really know what a 400HP FD is like. It's absolutely NUTS. Ask Rich or any of the other single guys that have been here a while.

If it's any contest, I have a 350z rated at 300 HP and I swear it feels no faster than my wifes KIA. My FD was uncontrollable and pissed at the world.

 

I agree with you, before the single the car was a power house but much more predictable and controllable. After the single the car felt completely different, once boost hits, neck snapping power.

 

^heh nice xD

yeah, even stock, these cars have a mean snap to them... gotta learn to drive it stock before you sitting ontop of 400 rwhp.

as for actually getting there, i would swap the turbos out for BNR units, the stock units really cant perform well over 15 psi. Although theres a guy on the forum that claims hes putting down 19psi out of the stock system.

Eitherway, fuel upgrade is critical, if your not delivering the right fuel for the air coming in, lean out and you get shitty results... aka blown seals etc.

im gonna be putting down 330 - 340 on the stock turbos on a streetported block, running the stock turbos.

 

thanks for all the info guys... so, so far from what i've gathered the only things i need to do while the engine is out is;

Upgrade the turbos
streetport
fuel system

 

^^
throw a clutch on there while u got it out

 

any specific clutch for 400+hp??

 

I blew through an ACT street/strip in less than 10,000 miles. Although only a few of those were at 420 rwhp, 340rwtq (when I went single) so I'm pretty sure the power from the single burned (literally) through that clutch.

Its pretty weaksauce, get a 6-puck clutch, like an EXEDY or something

 

When installing an aftermarket clutch, I would recommend that you ensure that you have a reinforced clutch fork. I don't remember specifics, but Mazda came out with a reinforced clutch fork to compensate for sturdier clutches. It isn't expensive and can be obtained at Malloy Mazda 888-533-3400 (ask for Ray). I would hate to see you go through all this work, drive your car for a little while and then break your clutch fork (ask my how I know...)

Along with colder plugs, I would also think about upgrading your spark with something like an HKS twin power.

Just spend some time reading in this section as well as the single turbo section and you will find all the gouge you need.

Good luck,

Charlie

 

Im in the Single Turbo process right now... Should be done next week.. I have all the power and reliability mods... just not the tire/clutch/suspension mods yet.. Until I can afford to get these I will be running on LOW boost..

As far as going from a stock FD to a 400+rwhp FD, that is a HUGE difference so be careful.... I went from intake/exhaust to 336rwhp and soon to be over 400 cant wait

 

my FD makes 400rwhp on stock twins, pulls great

 

I have an Exedy Stage 2 w/6-puck sitting in my living room right now. I would say call up the guys at Rotary Performance (www.rx7.com) to get more info on it, their number is (972) 530-3335. I will be installing and running my BNR Stage 3's on the 16th of April, doing everything in one fell swoop.

If you want I can tell you then how the clutch feels, I'm keeping my stock flywheel. All said I will be stoked if I can see 380 rwhp (I've got EVERYTHING I mentioned in my first post, and a little more for install) since my engine has not been ported yet.

As far as cost goes, this winter I have spent just over $8k on getting everything together for the jump from 280rwhp to where ever my tune lands me @ 16-17 psi. Granted 2-3 of that was for upgraded brakes and larger wheels/tires (to accomidate the larger brake kit). If/when you are ordering parts I would *HIGHLY* suggest physically calling the store you are ordering from to place your order.. I have noticed that websites are not always updated, and some merchants (who I will not name, or EVERY buy from again) neglect to tell you about their missing parts until months down the road....

Something I forgot to mention (though I think of it lumped in with the monitoring mods) is that you may want to get a good boost controller as well (Greddy Profec B, spec 2 seems a popular choice). And since you are going to keep twins in there you may as well grab the Efini Y-pipe, this will give you improved performance and also replaces the possible point of failure that is the stock y-pipe.

 

he said hes going bnr right? i would get a efini y pipe because he has to mod it... i am in the process of getting bnr stage 3 right now, he got my turbos and y pipe being done as we speak. good choice would be to get the efini 1

 

sig worthy

 

My FD makes 442 rwhp, 408 rwtq, no turbos.

 

+1

 

whell im making 0 rwhp and -2rwtq with no turbos... yea beat that

 

I changed my motor, transmission, and differential fluid today, runs great!

 

blown right?

 

^Most likely an LSx convert ;-)

 

how is a 6- puck on the street?? vs. the street clutch? (which i know wont hold 400+rwhp)

 

wrong, NA



I didn't post to start a flame war, just another way to get 400+ hp and reliability.